dcsimg

Comprehensive Description ( англиски )

добавил Smithsonian Contributions to Zoology
Eunice validobranchiata Monro, 1937

Eunice validobranchiata Monro, 1937:288–289, fig. 13a-f.

MATERIAL EXAMINED.—Three syntypes, BM(NH) ZK. 1937.9.2.312–6, Arabian Sea, South of Oman, 21°50′00″N, 59°52′00″E, 1046 meters, green mud, trawled, 3 Nov 1933, John Murray Expedition sta 54.

COMMENTS ON MATERIAL EXAMINED.—All three syntypes are incomplete; one with 103 setigers is deeply dissected and probably formed the base of Monro's description; another has 111 setigers and forms the base of the description and illustrations given here. The third type consists of 52 setigers.

DESCRIPTION.—All 3 syntypes incomplete. One syntype with 103 setigers; length 85 mm; maximal width 4 mm; length through setiger 10, 10 mm. Another syntype 111 setigers; length 43 mm; maximal width 3.5 mm at setiger 10; length through setiger 10, 7 mm. Third syntype with 52 setigers; length 24 mm; maximal width 2.5 mm; length through setiger 10, 6 mm.

Prostomium (Figure 114a) distinctly shorter and narrower than peristomium, less than as deep as peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus deep. Antennae in a horseshoe, with A-I isolated by a gap, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles tapering, without articulations. A-I to setiger 1; A-II to setiger 4; A-III to setiger 7. Peristomium cylindrical. Separation between rings distinct dorsally, indistinct ventrally and indistinguishable laterally; anterior ring of total peristomial length. Peristomial cirri outreaching prostomium, slender and tapering, without articulations.

Maxillary formula 1+1,9+9,11+0, 8+11, and 1+1 according to Monro. Mx III long. Left and right Mx IV apparently matching. Distal teeth on left Mx II illustrated as being very small.

Branchiae (Figure 114b) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 3 to setiger 37–40. Branchiae terminating well before posterior end, present on less than 55% of total number of setigers. All branchiae except last 2 or 3 pairs pectinate; maximum filaments 33 in largest syntype, 17 and 13 in 2 other syntypes; maximum filaments reached at setigers 15–20. Branchial stems slender, erect Filaments long and slender.

Anterior and median neuropodial acicular lobes truncate, becoming irregularly rounded in posterior setigers (Figure 114c); aciculae emerging at midline. Pre- and postsetal lobes low transverse folds. First 3 ventral cirri thick and tapering. Ventral cirri modestly basally inflated in median setigers. Inflated bases ovate; narrow tips digitiform. Posterior ventral cirri not basally inflated, digitiform. Notopodial cirri long, slender and tapering, with distinct internal aciculae, without articulations.

Limbate setae slender. Shafts of pectinate setae (Figure 114e) slender, blade flaring, flat One marginal tooth longer than other teeth; ∼10 teeth present. Shafts of compound falcigers (Figure 114d) tapering, dentate along cutting margins. Appendages nearly triangular in outline, bidentate. Proximal teeth low, triangular and directed laterally. Distal teeth delicate, tapering, nearly erect Guards symmetrically pointed, but not mucronate, marginally serrated. Pseudocompound falcigers and compound spinigers absent. Aciculae single anteriorly, paired posteriorly, yellow, slender, tapering, straight; cross-section round. Separation of cores and sheaths indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 114 f,g) yellow, bidentate. Hooks first present from setiger 37, 30, and 28 in 3 syntypes, present in all setigers thereafter, always single (except for replacements). Hooks slender; proximal teeth larger than distal teeth, directed distinctly laterally.

UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium and anal cirri.

EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEATURES.—None.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 22, 56, 58, 59. Unknown Characters: 1, 2, 4, 6, 13, 14, 63.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—None.
лиценца
cc-by-nc-sa-3.0
библиографски навод
Fauchald, Kristian. 1992. "A Review of the Genus Eunice (Polychaeta: Eunicidae) Based upon Type Material." Smithsonian Contributions to Zoology. 1-422. https://doi.org/10.5479/si.00810282.523
изворно
посети извор
соработничко мреж. место
Smithsonian Contributions to Zoology

Eunice validobranchiata ( холандски; фламански )

добавил wikipedia NL

Eunice validobranchiata is een borstelworm uit de familie Eunicidae. Het lichaam van de worm bestaat uit een kop, een cilindrisch, gesegmenteerd lichaam en een staartstukje. De kop bestaat uit een prostomium (gedeelte voor de mondopening) en een peristomium (gedeelte rond de mond) en draagt gepaarde aanhangsels (palpen, antennen en cirri).

Eunice validobranchiata werd in 1937 voor het eerst wetenschappelijk beschreven door Monro.

Bronnen, noten en/of referenties
Geplaatst op:
15-12-2011
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen. Beginnetje
лиценца
cc-by-sa-3.0
авторски права
Wikipedia-auteurs en -editors
изворно
посети извор
соработничко мреж. место
wikipedia NL